Mesa/Boogie Express 5:50 Plus 50-watt Tube Head - Black

2-channel, All-tube 5/25/50-watt Guitar Amplifier Head with Duo-Class Operation, 5-band Graphic EQ, and 4-button Footswitch - Black
5/5 12 Write review Item ID: EXP550PlusHD
Mesa/Boogie Express 5:50 Plus 50-watt Tube Head - Black image 1
Mesa/Boogie Express 5:50 Plus 50-watt Tube Head - Black image 1

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Mesa/Boogie Express 5:50 Plus 50-watt Tube Head - Black
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Express 5:50 Plus

The Mesa/Boogie Express 5:50 Plus guitar amplifier head inches closer to tube amp Nirvana. Mesa has taken their (already killer) Express 5:50 and injected even more Petaluma mojo. With Multi-Watt channel-assignable power, an improved clean mode, Mesa's famous 5-band graphic equalizer, performance-enhancing solo control, and a new 4-button footswitch, this 2-channel, 5-/25-/50-watt tone monster proves that beastly things do indeed come in compact packages. Massive tonal dexterity makes the 1 x 12" Express 5:50 Plus head ideal for both live work and and recording. Get onboard Mesa/Boogie's Express 5:50 Plus and hang on!

Mesa/Boogie Express 5:50 Plus Tube Guitar Amp Head at a Glance:
  • Awesome new features get you even closer to tube amp Nirvana
  • Great Boogie tube tones for all kinds of players
  • Choose your power section
  • A tone-shaping, air-moving beast
  • Mesa/Boogie's high-gain heritage
Awesome new features get you even closer to tube amp Nirvana

How do you improve on near perfection? Well, that's always been the name of the game at Mesa/Boogie. Mesa has taken their (already amazing) Express 5:50 and injected even more perfection. The Express 5:50 Plus features an improved clean mode with warm and breathing lows, increased sparkle in its highs, and tweaked S/N. You now get Mesa's full-blown Multi-Watt channel-assignable power with Duo-Class and Dyna-Watt technologies, letting you run your power tubes in any of three different wattage ratings (5-watt, 25-watt, or 50-watt) per channel. Each has its own tone-bending wiring configuration and operating class! Mesa's legendary 5-band graphic EQ is now along for the ride, too. With additional controls, you can footswitch or auto-assign the EQ sliders or the preset control in each channel. Mesa's performance-juicing solo control is also onboard. It gives you an additional footswitchable master output control, which lets you preset your ideal amount of volume boost for solos and figures that you wish to have additional emphasis. It also allows you to trigger it on the fly. Lastly, a new 4-button footswitch gives you ready access to channels, reverb, EQ, and solo. Wow. Impressive updates, particularly for an amp many guitar players considered already perfect.

Great Boogie tube tones for all kinds of players

Wouldn't it be great to be able to use the same amazing-sounding amp for stadium gigs, club dates, and in the studio? Thanks to Mesa/Boogie, you can! The Express 5:50 Plus head features three completely different power configurations spread across two fully independent channels. Are you a tonal traditionalist? Select clean and blues for your two footswitchable sounds. If you're addicted to gain, choose crunch and burn. Then stand back as the mild-mannered Dr. Jekyll morphs into the maniacal hardcore beast: Mr. Hyde. Most important is the classic authenticity of all these iconic tones. No matter what your stylistic destination, the Express 5:50 Plus will get you there.

Choose your power section

Up front, that number 5 indicates the low power, single-ended magic of pure Class A. The 25 setting gives you medium Class A push-pull output that's ideal for club work. Got an arena gig? Move serious air with the Express 5:50 Plus's 50-watt Class A/B setting. This impressive tonal and volume flexibility is made possible by Mesa/Boogie's Duo-Class and Dyna-Watt technologies that deliver multiple wattages and both single-ended and push-pull configurations in the same amplifier. Very cool.

A tone-shaping, air-moving beast

Each channel of the Mesa/Boogie Express 5:50 Plus is further equipped with its own contour depth control for added shaping that's both assignable and footswitchable. Used subtly, contour adds a halo of depth and chime to gleaming clean sounds. Higher contour settings, especially in crunch and burn, take you into recto turf, which is tight, huge, and menacing. Don't be fooled by the compact size of the Express 5:50 Plus head - it's more than capable of the kind of volume that can keep up with a live band while providing the tonality, nuance, and flexibility you need in the studio.

Mesa/Boogie's high-gain heritage

Mesa/Boogie founder Randall Smith started out modifying amps for Bay Area bands in the late 1960s. His clients were the heavies of the San Francisco scene, such as the Grateful Dead, Jefferson Airplane, Quicksilver, Big Brother, Santana, Steve Miller, Country Joe and the Fish, and many more. Randall's famous hot-rodded Fender Princetons from this era are the stuff of legend: how could a little 15-watt combo get so LOUD? Ever since Randall handbuilt the first Mark I amps in a Northern California mountain shack in in 1971, the name Mesa/Boogie has been a standard-setter in high-gain guitar amplification. Today, guitar greats such as Carlos Santana, Al Di Meola, John Petrucci, Andy Timmons, and Kirk Hammett use the distinctive, versatile voice of Boogie amplifiers to forge their signature sounds. And you can, too.

Mesa/Boogie's Warranty: The Best in the Business!

Your new Mesa/Boogie amp is protected by Mesa/Boogie's transferable warranty: five years on the electronics, three years for speakers, and six months for tubes.

Mesa/Boogie Express 5:50 Plus Tube Guitar Amp Head Features:
  • Custom-designed and handcrafted in Petaluma, California
  • All-tube design featuring 5 x 12AX7 preamp tubes and 2 x 6L6 power tubes
  • 50-watt Class A/B operation, 25-watt Class A push-pull operation, and 5-watt single-ended Class A operation
  • Fixed bias for consistent, maintenance-free performance
  • 2 fully independent channels with 4 style modes
  • 5-band graphic EQ or preset V-Curve contour controls (footswitchable or channel-assignable)
  • All-tube long-spring reverb with independent channel controls
  • Fully buffered effects loop
  • 4-button footswitch and slipcover included
  • Important Notice for International Customers: Mesa/Boogie products sold by Sweetwater are intended for use within the United States. We are unable to ship any Mesa/Boogie products outside of the US.
The Mesa/Boogie Express 5:50 Plus is the perfect go-to rig for stage and studio!

Additional Media

Guitar Amp Buying Guide

Tech Specs

Type Tube
Number of Channels 2
Total Power 50W/25W/5W
Reverb Yes
EQ 3-band with Contour, 5-band Graphic
Preamp Tubes 5 x 12AX7
Power Tubes 2 x 6L6
Inputs 1 x Instrument
Outputs 3 x Speaker
Effects Loop Yes
Footswitch I/O Yes
Width 22.8"
Manufacturer Part Number 2.50P.BB

Customer Reviews

Based on 12 reviews
Write your review

just got mine

I have mine plugged into a 2x12 Boogie cab and a 1x12 Boogie cab. Super thick soloing capabilities. Very flexible. I highly recommend it. Prob my 5th boogie over 20 years. And certainly my favorite. My Marshall JVM410 is the greatest amp I have ever owned and does the trick for 4x12 goodness, but this amp is better for Jam band, blues, funk stuff. This is not a metal amp AT ALL. If you want some metal capabilities to go with the Mark V. this amp has beautiful, clean sounds too! Excellent reverb. Buy it! Now! Don't tell your wife!

Great amp!!!

This amp is great. I was not able to find one locally to test drive so I had to watch videos and read reviews to make my decision. I'm so glad I ended up ordering this from Sweetwater. I ordered it Friday morning, had it in my hands Saturday afternoon.The "clean" is clean and round, "crunch" is fat and thick, "blues" is responsive and earthy, "burn" is punchy and driven. Having the option to choose 5, 25, or 50 Watts is nice and does not just change the volume, but also changes feeling of the amp and how it compresses the guitar signal. If you are wondering if 50W is enough, find one to play. I actually had a heavy handed drummer comment on how loud it was.I feel that this amp (with the right cab) could be used for any sized show. All in all, this is a great amp!

Express 5:50

This amp is truly amazing. I used it for our Christmas Services at Church, ran it through a 1-12 rectifier cab, and the THD Attenuator. The 50 watt clean channel was crisp, and the crunch gave me a nice bluzy sound. This was run with my PRS Custom 22 - 10 Top. I love the sound the 6L6 tubes produce over the EL84. This is definitely a great amp for worship and gigs.

Truly is Amazing

So I wanted to express some feedback for everyone that is thinking about buying this amp. Anything Mesa Boogie is truly amazing, so don't think twice when your deciding to buy a mesa boogie. I own this amp head, and I am blown away by its amazing sound it puts out, it is truly unique. If this is your first time buying this brand, I would recommend getting this as your first Mesa Boogie amp. I always been a combo man myself, but I got this with a closed back speaker cab and I am never going back to a combo. Just because the sound is tight, you can dial in whatever your needs are with no issues. Anything from clean tone, to blues, to rock, and metal. Best part is: Easy to lug around, no biasing it when replacing the tubes and this thing shines bright with my band.

Just Amazing - just get this already

This is the first Mesa Boogie ever owned, it has always been my dream amp to get! The hard part of getting one that I wanted was choosing which Mesa amp to get and I decided to get this little bad boy and I am glad I did. I hooked it up to the Wide body speaker cab and couldn't believe the tones I am getting. I have always been a combo amp guy, but decided to get this set up instead of the combo version and this is worth every penny by far. This thing blows my Fender and Peavey amp out of the water. If your a combo amp type of guy but deciding if you want to get this instead, I recommend this amp head and the Mesa Boogie Wide Body 12 inch speaker to go with it. If you been waiting for years to get this amp, I would drop everything and get this one. Sell your amps you currently have and put the money towards this and a cabinet. I have found the tone I was looking for, no going back now
See also: Amp Heads, Mesa/Boogie, Mesa/Boogie Guitar Amp Heads